[BUG][Go] Golang client code is incorrect with presence of oneOf/allOF

[Etienne-Carriere]

Description

We discovered that with presence of oneOf/allOf we have presence of UNKNOWN_BASE_TYPE instead of interface{} (or other know type)

OpenAPI Generator versions

Version tested :

• 5.0.1
• master

OpenAPI file

I tested a very simple openAPI v3 file :

openapi: 3.0.1
info:
  description: test
  title: test
  version: 1.5.0
servers:
- url: v1
paths:
  /pets:
    patch:
      requestBody:
        content:
          application/json:
            schema:
              discriminator:
                propertyName: pet_type
              oneOf:
              - $ref: '#/components/schemas/Cat'
              - $ref: '#/components/schemas/Dog'
      responses:
        "200":
          description: Updated
components:
  schemas:
    Pet:
      discriminator:
        propertyName: pet_type
      properties:
        pet_type:
          type: string
      required:
      - pet_type
      type: object
    Dog:
      allOf:
      - $ref: '#/components/schemas/Pet'
      - $ref: '#/components/schemas/Dog_allOf'
    Cat:
      allOf:
      - $ref: '#/components/schemas/Pet'
      - $ref: '#/components/schemas/Cat_allOf'
    Dog_allOf:
      properties:
        bark:
          type: boolean
        breed:
          enum:
          - Dingo
          - Husky
          - Retriever
          - Shepherd
          type: string
      type: object
    Cat_allOf:
      properties:
        hunts:
          type: boolean
        age:
          type: integer
      type: object

Actual behavior

• With both go and go-deprecated presence of UNKNOWN_BASE_TYPE which is not a known primitive type in golang

Expected behavior

• No compilation error
• At least a interface{} for oneOf

[danaelhe]

I have the same issue with the python client. Has anyone found a work around?

[stevenbrookes]

I have the same issue with PHP client also. V5.1.1

[vdods]

I've got the same issue with the rust-server generator -- this happens for me using openapitools/openapi-generator-cli docker image as well as the online generators:

• http://api.openapi-generator.tech
• http://api-latest-master.openapi-generator.tech

Particular instructions (this one uses the online master branch service):

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{"openAPIUrl": "https://github.com/w3c-ccg/vc-http-api/raw/main/docs/verifier.yml"}' 'http://api-latest-master.openapi-generator.tech/api/gen/clients/rust-server' | jq -r '.link' | wget --input-file=- --output-document=verifier.zip
unzip verifier.zip
find rust-server-client -type f -exec grep -Hn UNKNOWN_BASE_TYPE {} \;

The grep command shows the presence of UNKNOWN_BASE_TYPE at various points in the generated code, which therefore doesn't compile.

[vdods]

Same with using the javascript generator.

[wing328]

Should be fixed in v6.0.0. Please give it another try.

[Etienne-Carriere]

@wing328 , Thank you very much. I confirm it works well both in request and in response (tested with oneOf). We can close the ticket. Thanks !